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Don Burleson Blog 







Oracle listener lsnrctl tips

Oracle Tips by Burleson Consulting
Don Burleson

Also see our notes on Oracle Listener Security & password management.

Here we see the lsnrctl command in action:

$ lsnrctl

LSNRCTL for Solaris: Version - Production on 30-JAN-2003 11:54:13

(c) Copyright 1998 Oracle Corporation.  All rights reserved.

Welcome to LSNRCTL, type "help" for information.


The following lsnrctl operations are available

An asterisk (*) denotes a modifier or extended command:

start               stop                status

services            version             reload

save_config         trace               spawn

dbsnmp_start        dbsnmp_stop         dbsnmp_status

change_password     quit                exit

set*                show*

The following commands are used to manage the listener: 

  •      start:   Starts the listener with the name specified, otherwise LISTENER will be used.  For Windows systems, the listener can also be started from the Control Panel.

  •      stop:   Stops the listener.  For Windows systems, the listener can also be stopped from the Control Panel.

  •      status:   Provides status information about the listener, including start date, uptime, and trace level.

  •      services:   Displays each service available, along with the connection history.

  •      version:   Displays the version information of the listener.

  •      reload:   Forces a read of the configuration file in order for new settings to take effect without stopping and starting the listener.

  •      save_config:   Creates a backup of the existing listener.ora file and saves changes to the current version.

  •      trace:   Sets the trace level to one of the following OFF, USER, ADMIN, or SUPPORT.

  •      spawn:   Spawns a program that runs with an alias in the listener.ora file.

  •      dbsnmp_start:   Starts the DBSNMP subagent.

  •      dbsnmp_stop:   Stops the DBSNMP subagent.

  •      dbsnmp_status:   Displays the status of the DBSNMP subagent.

  •      change_password:   Sets a new password for the listener.

  •      quit or exit:   Exits the lsnrctl utility.

  •      set:   Changes the value of any parameter.  Everything that can be shown can be set.

  •   show:   Displays current parameter settings.


For more details on Oracle utilities, see the book "Advanced Oracle Utilities" by Bert Scalzo, Andrew Kerber, Donald K. Burleson, and Steve Callan.

You can buy it direct from the publisher for 30% off directly from Rampant TechPress.



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